Link Overlay

Link overlay is a semantic component used to wrap elements (cards, blog posts, articles, etc.) in a link.

Source@chakra-ui/layout

Import#

import { LinkBox, LinkOverlay } from '@chakra-ui/react'

Usage#

When you need to link an entire component or card, it can be tempting to wrap it within <a href="..."> and think you're done. This is considered unsemantic and incorrect because the component or card could contain other clickable elements or links (tags, timestamps, buttons).

According to the specification, an <a> element’s content model specifically states that an <a> cannot contain any interactive descendants (button, anchors, input, etc.).

The LinkOverlay component aims to solve this by overlaying one link on top of the component or card, and then elevating the remaining links on top of it.

Wrap the container within a LinkBox and use the LinkOverlay as a child of it or around the title's content.

<LinkBox as='article' maxW='sm' p='5' borderWidth='1px' rounded='md'>
<Box as='time' dateTime='2021-01-15 15:30:00 +0000 UTC'>
13 days ago
</Box>
<Heading size='md' my='2'>
<LinkOverlay href='#'>
New Year, New Beginnings: Smashing Workshops & Audits
</LinkOverlay>
</Heading>
<Text>
Catch up on what’s been cookin’ at Smashing and explore some of the most
popular community resources.
</Text>
</LinkBox>

The LinkBox lifts any nested links to the top using z-index to ensure proper keyboard navigation between links.

Use the keyboard to test how focus ring moves within the article

<LinkBox as='article' maxW='sm' p='5' borderWidth='1px' rounded='md'>
<Box as='time' dateTime='2021-01-15 15:30:00 +0000 UTC'>
13 days ago
</Box>
<Heading size='md' my='2'>
<LinkOverlay href='#'>
New Year, New Beginnings: Smashing Workshops & Audits
</LinkOverlay>
</Heading>
<Text mb='3'>
Catch up on what’s been cookin’ at Smashing and explore some of the most
popular community resources.
</Text>
<Box as='a' color='teal.400' href='#inner-link' fontWeight='bold'>
Some inner link
</Box>
</LinkBox>

Usage with Routing Library#

To add support for external libraries like Next.js' or gatsby Link, you can wrap them around the LinkOverlay or use the as prop (for reach and react router)

import NextLink from 'next/link'
function Example() {
return (
<LinkBox as='article'>
<h2>
<LinkOverlay asChild>
<NextLink href='#'>Some blog post</NextLink>
</LinkOverlay>
</h2>
<p>
As a side note, using quotation marks around an attribute value is
required only if this value is not a valid identifier.
</p>
<a href='#inner-link'>Some inner link</a>
</LinkBox>
)
}

Caveat#

One of the side-effects of this technique is that the content can't be "selectable" (i.e. with a pointing device), however, this seems to be pretty trivial compared to the benefits!

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